How to Configure Shared Content Between Sites
My goal was to make the plugin usage as simple and intuitive as possible. But anyway, let me guide you through the installation process step by step.
1. Activate the plugin for Multisite Network
Once you added the plugin to your website, you have to “Network activate” it. In order to do so, please go to My Sites > Network Admin > Plugins and click “Network activate” link.

2. Configure the plugin
The plugin has a bunch of settings in Settings > Network Crosspost.

The cool thing here also is that you can switch to “Fields” tab and configure exactly what you would like to crosspost. For example you can ignore post statuses, so the posts are going to be created as drafts, and when you’re about to update them, their statuses on subsites remain unchanged.

3. Configure what sites to allow for cross-posting
If you skip this step, the plugin is going to use the 5 sub-sites from your WordPress multisite network ordered by their ID. Otherwise if you have hundreds of sub-sites in your network, it is better to choose which ones you would like to allow for crossposting.
In order to do so, please go to Network Admin > Sites, the select a website you would like to configure, click “Edit” link first, then select “Crosspost” tab.

4. Select the sub-sites when creating a post
In case you’re using Gutenberg editor:

In case you’re using Classic Editor:

Once you published a post on multiple websites in your network, you can deactivate the checkboxes, if you don’t, you posts will continue to sync! In other words, posts can be independently edited on each website.
This is how it would work:
Bulk Crossposting
Plugin also has a feature to crosspost multiple posts at the same time without going into each post. In order to make it work, please install a free add-on from here.

Product Sync in WooCommerce
In case you’re running multiple WooCommerce stores in a Multisite network and wondering whether plugin will work for your scenario or not – yes, it will work.
The plugin allows you to sync any type of WooCommerce products between sites (simple, grouped, variable, downloadable etc) and all the product data (prices, product gallery, downloads, stock quantity, custom fields etc).
You can also exclude specific WooCommerce product data from syncing, for example prices, stock quantities or product images and galleries.